Filter



une 10, 1930. A. v. GULLBORG 1,763,513

FILTER Filed Marh 9, 1928 Pienza! June 10,1930

UNITED STATES PATENT OFFICE Braun v. sermone, or emesso, rumors Application med mmh 9,1928. serial No. 260,275.

This invention relates to im rovements in filters and devlces of like c aracter, andA more particularly to a filter for fluids, which is highly desirable for the substantial pun- 4fication of Water and similar liquids, al-k thereby. causing the fluid to rst pass.

through undesirable matter and then through the lter means, and tending to clog the filtering means so that only a reduced portionv of the Huid could pass therethrough. This necessitated the employment-.of extraneous or additional means for cleaning the ltering means, and in many instances, necessitating 5 the dismantling of the device to properly clean the iiltering means, obviously resulting in undesirable and expensive delays. Especiallywere vthe above objections true in nearly every case with ltering devices mount- D able over a 'faucet or the like, for purifying the liquid-.derving therefrom. These devices retained therein foreign matter dlteredfrom the liquid, and in due course, actually drove undesirable quantities of the `foreign mat- 5 ter through the iltering means by thefrequently applied pressure thereon. A'

The present invention seeks to overcome the above noted defects and. objections in the provision of a filtering device wherein the D filtering means are veectively cleaned simultaneously with and by the iiuid passing thereover.

The invention also seeks to provide a device o the class described herein in which 5 the matter Withheld by the iltering means is` electively and continuously discharged or ejected entirely from the device."

A further important object of the preseiit invention is to provide a ltering device 0 which is easily and quickly removably attached in a Huid-tight manner to a faucet' 4 I or similar fluid supplyin means.

A still `further ob]ect o the resent invention is to provide a` iltering evice wherein a fluid is applied to the filtering means in a `swirling manner and so controlled that it will leave the lter in a smoothly flowing manner. Y

While some of the more salient features, characteristics, and advantages, of a device embodying this invention have been above pointed out, others will become ap parent from the following disclosures. The invention includes these and other features of construction and combinations of parts hereinafter described, and shown in preferred form inthe drawings, as more particularly indicated by the claims.

On the drawin s:

Figure 1 is airagmentary View in elevation showing a faucet with a device elnbodying principles of the present invention attached thereto.

Figure 2 is a fragmentary substantially l central vertical sectional device itself.

Figure 3 is a fragmentary View similar. to Figure 2 showing the device attached as in Figure l and indicating the operation of' the device.

Figure l is a fragmentary plan sectional View taken substantially along line lV-lV of Figure 2.

` Figure 5 is a fragmentar bottom plan sectional view taken substant1ally along line V-V of Figure 2. l

Figure 6 is a fragmentary bottom plan view of the device.

As shown in the drawings:

In Figure l of the drawings there is view through the eo shown a faucet 1 over the mouth of which parting the casing. The opening at the top of the casing 2 is partially closed 'by a resilient disk 6 secured in the casing in any desired manner or as shown by bending the casing walls therearound in order to grip the disk. The disk is provided'with a central aperture 7 so that it may be forciblyslipped over the mouth of the faucet 1, as shown more clearly in Figure 3. When so position the disk will be downwardly bent. and due to the inherent resiliency t erein will tightl port t e casing 2 and provide a simple flui ti ht connection, the pressure of the fluid wlthin the casing 2 on the disk aiding in making the connection fluid-tight.

Within the casing is provided which is of desirably fine mesh to adequately7 remove from the fluid to be filtered. Just in advance of the screen 8, dischar e means are provided for a portion of the uid contain- Aing lthe foreign matter filtered out by the screen 8. Thel discharge means comprise, in this instance, an outlet conduit 9 which is secured adjacent an aperture in the casing wall, preferably by bending the conduit to form an annular groove therein, as indicated at 10, which (grips'the casing wall adjacentthe aforesai aperture to establish a fluid-tight connection. The outer end of the discharge conduit 9 is preferably downwardly inclined, as shown more clearly in Figure 1, so that the fluid discharged therethrou h will not interfere in an manner withthe reception of the fluid owing fronrthe casing orifice 4, and if the device is mounted over a sink or the like, the undesirable fluid will be discharged through the conduit 9 against the splash board ofthe sink in an easy manner, eliminating any undesirable splashing.

In .the present instance, means are lprovided for directing the fluid to be filtered- `over anden-the filtering. screen 8 in such a manner that the"'sc`reen will be continually cleared of the foreign matter held thereby, by the action of the fluid itself. The fluid directing means, in this instance, comprise a funnel-shaped member 11 having `a plurality of transverse orifices 12 in the side thereof and a'major discharge orifice or nozzles 13 at the bottom thereof. The mouth of the. faucet 1 preferably extends within the funnel-shaped portion of the member 11 so that thefluid to be filtered will be discharged directly into this member.

The majororifice 18 in the memberl 11, is

normally closed 'by means of a conically topped valve 14, the stem 15 of which projects downwardly through the screen 8 and a corrugated screen 16 disposed beneath the vpressure of the embrace the faucet to thereby su 2, a filtering screen 8' foreign substances large obtuse screen 8. The corrugated screen `"1 6 is resilient in its nature and is so corrugated to aid in the retention of the inherent elasticit in the screen so that the same will not be orced beyond its elastic limit by the fluid exerted upon the valve head 14, whereby the screen 16 will force the valve upwardly to close the orifice 1?l preventing screen 17, preferably cup-li e in structure and of suflicient de th to permit free action of the valve 14. he screens 8, 16, and 17, are supported', in the present instance, by an annular shoulder 18 formed in the casing wall, and are heldl down upon this shoulder by a spring` ring 19.

The operation of the present invention is `very simple though none the less efficient.

rIfhe device is first attached as hereinbefore described 'to the mouth 'of the faucet 1.

When fluid ispermitted to pass through the faucet 1 it enters directly into the funnellike member 11, the minor portion of the fluid passing through the transverse orifices 12 and the major portion exertin a ressure L through the orifice 13 on the v ve ead 14.

The valve will respond with a downward movement pro ortional to the pressure of the fluid and t e major portion of the fluid will be discharged over and on the filtering screen 8 striking vthe same at a relatively angle thereto. Due to the transverse'discharge of the fluid through the orifices 12 and the substantially transverse discharge of the fluid over the valve head, a swirling action is given to the fluid, as indicated by fectively clears the screen 8 of the foreign substances retained thereby. The swirling action continues in a degree sufficient to dischar e a portion of the fluid together with the oreign substances filtered out of the fluid through the conduit 19, although the major portion of the fluid passes downwardly through the screens, 8, 16, and( 17, and out the orifice 4. Obviousl the lfluid assing through the orifice 4 will be cleaned) and purified by the` screens, the screen '17 imthe arrows in Figure 3, which efparting a smooth flo`w to this portion of the l devices embodying principles of the present invention may be -used in connection with any desired fluid supply means.

From the fore oing it is apparent that I have provided a ter in which the filtering invention is shown attached to a faucet, it is to bel clearly understood that means are continually cleared of foreign substances by the action of the fluidv to be filtered, and which is easily attached to or detached from Huid supply/means, simple 4. for releasingly actuating ply means, `a screen in said casing, means in construction, and economically manufactured.

I am awaret-hat many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention and I, therefore, do not purpose limiting the patent granted hereon otherwise-than necessitated by the prior art.

I claim as my invention:

1. In a device 'of the character described, foramino'us means, major and minor means for directing a fluid over said foraminous means, and means normally blocking the action ofsaid major directing means but proportionally responsive to the pressure of said fluid to permit said action.

2. In a device of the class described, filtering means, means having a major orice and minor orifices therein for directing a iuid onto said Filtering means, a valve normally closing said major orifice, and resilient means responsive to the pressure of said Huid for controlling said valve.

3. In a filter, a screen, means vfor directin a fluid on said screen, means tendin to bloc the action of said fluid through said directing means, and means `adjacent said screen said blocking means an amount proportional to the pressure of said fluid.

4. In a filter, a screen, means for directing a fluid onto said screen, a valve tending to block the action of said Huid through said directing means, and a corrugated screen disposed adjacent the outer side of said first mentioned screen for actuating said valve an amount proportional to the pressure exerted thereon by said Huid.

5. In a device of the class described, a casing having an outlet orifice therein, means for attaching said casing to Huid supfilterin mea-ns, means` for directing a fluid throng major and minor orifices upon said filtering means in such a manner that the same is continually cleared, means responsive to the pressure of said fluid for controlling the admission thereof .through said major orifice, discharge means in advance of said filtering means for a portion of said fluid containing matter'retarded by said filtering means, and means beyond said lterav'rn-g an orifice therein for directing fluid onto said screen, a valve normally closing said last mentioned orifice, a resilient screen adjacent said first mentioned screen for actuating said valve in. proportion to the pressure of said fluid, and a splash preventing yscreen disposed in advance of said outlet orice.

6. In a devicevof the character described,

a casing, foraminous means therein, a hol-y low element in advance of said foraminous means for directing a iiuid thereupon, said element having a ma] or orifice therein and a `7. Ina device of the character described,

lplurality of minor transversely disposed p llO 

